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  <div class="section" id="cmake-generator-platform">
<span id="variable:CMAKE_GENERATOR_PLATFORM"></span><h1>CMAKE_GENERATOR_PLATFORM<a class="headerlink" href="#cmake-generator-platform" title="Permalink to this headline">¶</a></h1>
<p>Generator-specific target platform specification provided by user.</p>
<p>Some CMake generators support a target platform name to be given
to the native build system to choose a compiler toolchain.
If the user specifies a platform name (e.g. via the <span class="target" id="index-0-manual:cmake(1)"></span><a class="reference internal" href="../manual/cmake.1.html#manual:cmake(1)" title="cmake(1)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake(1)</span></code></a> <code class="docutils literal notranslate"><span class="pre">-A</span></code>
option or via the <span class="target" id="index-0-envvar:CMAKE_GENERATOR_PLATFORM"></span><a class="reference internal" href="../envvar/CMAKE_GENERATOR_PLATFORM.html#envvar:CMAKE_GENERATOR_PLATFORM" title="CMAKE_GENERATOR_PLATFORM"><code class="xref cmake cmake-envvar docutils literal notranslate"><span class="pre">CMAKE_GENERATOR_PLATFORM</span></code></a> environment variable)
the value will be available in this variable.</p>
<p>The value of this variable should never be modified by project code.
A toolchain file specified by the <span class="target" id="index-0-variable:CMAKE_TOOLCHAIN_FILE"></span><a class="reference internal" href="CMAKE_TOOLCHAIN_FILE.html#variable:CMAKE_TOOLCHAIN_FILE" title="CMAKE_TOOLCHAIN_FILE"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_TOOLCHAIN_FILE</span></code></a>
variable may initialize <code class="docutils literal notranslate"><span class="pre">CMAKE_GENERATOR_PLATFORM</span></code>.  Once a given
build tree has been initialized with a particular value for this
variable, changing the value has undefined behavior.</p>
<p>Platform specification is supported only on specific generators:</p>
<ul class="simple">
<li><p>For <a class="reference internal" href="../manual/cmake-generators.7.html#visual-studio-generators"><span class="std std-ref">Visual Studio Generators</span></a> with VS 2005 and above this
specifies the target architecture.</p></li>
<li><p>For <span class="target" id="index-0-generator:Green Hills MULTI"></span><a class="reference internal" href="../generator/Green Hills MULTI.html#generator:Green Hills MULTI" title="Green Hills MULTI"><code class="xref cmake cmake-generator docutils literal notranslate"><span class="pre">Green</span> <span class="pre">Hills</span> <span class="pre">MULTI</span></code></a> this specifies the target architecture.</p></li>
</ul>
<p>See native build system documentation for allowed platform names.</p>
<div class="section" id="visual-studio-platform-selection">
<h2>Visual Studio Platform Selection<a class="headerlink" href="#visual-studio-platform-selection" title="Permalink to this headline">¶</a></h2>
<p>On <a class="reference internal" href="../manual/cmake-generators.7.html#visual-studio-generators"><span class="std std-ref">Visual Studio Generators</span></a> the selected platform name
is provided in the <span class="target" id="index-0-variable:CMAKE_VS_PLATFORM_NAME"></span><a class="reference internal" href="CMAKE_VS_PLATFORM_NAME.html#variable:CMAKE_VS_PLATFORM_NAME" title="CMAKE_VS_PLATFORM_NAME"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_VS_PLATFORM_NAME</span></code></a> variable.</p>
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